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Finding the Fourth Proportional to 58,375, 87,539.82 and 18,922.60

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Solution

The fourth proportional to 58,375, 87,539.82 and 18,922.60 is: 28,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,375 : 87,539.82 = 18,922.60 : x
  2. Step 2: Convert to fraction form
    58,375/87,539.82 = 18,922.60/x
  3. Step 3: Cross multiply
    58,375x = 87,539.82 × 18,922.60
  4. Step 4: Simplify right side
    58,375x = 1,656,480,997.93
  5. Step 5: Solve for x
    x = 1,656,480,997.93/58,375
  6. Step 6: Final answer
    x = 28,376.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.